Table 1 Baseline characteristics of study participants at enrolment

Age (years): median (IQR)

≤18 years old: n (%): n (%)

Gravidity (pregnancies): median (IQR)

Primigravida: n (%)

Gestational age (weeks): median (IQR)

First trimester: n (%)

Axillary temperature (°C): median (IQR)^a

Fever at enrollment: n (%) ^a

History of fever (72 h): n (%)

Febrile: n (%) ^a

 Quibdó

 Tumaco

 Rural

 Urban